Data Zone
Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2016 | Least Concern | |
| 2012 | Least Concern | |
| 2009 | Least Concern | |
| 2008 | Least Concern | |
| 2004 | Least Concern | |
| 2000 | Lower Risk/Least Concern | |
| 1994 | Lower Risk/Near Threatened | |
| 1988 | Lower Risk/Least Concern |
| Migratory status | full migrant | Forest dependency | Does not normally occur in forest |
| Land mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 7,770,000 | medium |
| Extent of Occurrence non-breeding (km2) | 4,870,000 | medium |
| Number of locations | - | |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | poor | estimated | 2009 | |
| Population trend | Increasing | estimated | - | |
| Decline (3 years/1 generation past) | - | - | - | |
| Decline (5 years/1 generation past) | - | - | - | |
| Decline (10 years/1 generation past) | - | - | - | |
| Decline (10 years/3 generation future) | - | - | - | |
| Decline (10 years/3 generation past and future) | - | - | - | |
| Number of subpopulations | - | - | - | |
| Percentage in largest subpopulation | - | - | - | |
| Generation length (yrs) | 13.6 | - | - | - |
Trend justification: This species has undergone a small or statistically insignificant increase over the last 40 years in North America (data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007).
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Canada | N | Extant | Yes | Yes | ||
| Mexico | N | Extant | ||||
| USA | N | Extant | Yes |
| Country/Territory | IBA Name |
|---|---|
| Canada | Cardinal Lake |
| Canada | Frank Lake (south) |
| Canada | Grande Prairie - Trumpeter Swan IBA |
| Canada | Frank Lake (north) |
| Canada | Comox Valley |
| Canada | Boundary Bay - Roberts Bank - Sturgeon Bank (Fraser River Estuary) |
| Canada | Squamish River Area |
| Canada | Chehalis River Estuary |
| Canada | Cowichan estuary |
| Canada | Somenos Marsh Wildlife Refuge |
| Canada | Baynes Sound |
| Canada | South Thompson River |
| Canada | Fraser Lake |
| Canada | Stuart, Tachie and Middle Rivers |
| Canada | Vaseux Lake Area |
| Canada | Tachick and Nulki Lakes |
| Canada | Wye Marsh |
| Canada | Greenwater Lake Provincial Park |
| Canada | Nisultin River Delta |
| Canada | Shallow Bay, Big Slough and Swan Lake |
| Canada | M'Clintock Bay to Lewes River Marsh |
| Canada | Tagish Narrows |
| USA | Kahiltna Flats-Petersville Road |
| USA | Redoubt Bay |
| USA | Swanson Lakes |
| USA | Copper River Delta |
| USA | Hebgen Lake |
| USA | Upper Tanana River Valley |
| USA | Great Rivers Confluence-35 |
| USA | Skagit Bay |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Marine Neritic | Estuaries | major | non-breeding |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | major | breeding |
| Altitude | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
| Future | Whole (>90%) | Unknown | Unknown | ||||||
|
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Recommended citation
BirdLife International (2021) Species factsheet: Cygnus buccinator. Downloaded from
http://www.birdlife.org on 23/04/2021.
Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 23/04/2021.
